Dual-Compartment Vacuum Bottle Sealing Mechanism
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Solution Overview
Problem
Existing vacuum bottles with two compartments are inefficient for packaging lyophilized powder products due to susceptibility to moisture and limited reuse and assembly capabilities, as they often rely on structural designs that make it difficult to introduce materials without exposing them to moisture and lack functional replacement devices.
Innovation Solution
A fresh-keeping vacuum bottle with two compartments featuring a piston, vent hole, and a unique snap-fitting mechanism with rotating and fixed large circles, a sealing plug, and a pump core assembly that allows for the alignment of thru-holes to facilitate the mixing of materials without moisture exposure, enhancing sealing and usability for powder products.
Engineering Contradictions & Design Principles
Engineering Contradiction Analysis
1Ease of manufacture
If the conventional design of opening the inner cavity by pressing the head cap is adopted, then the structure is simple, but it is susceptible to moisture and difficult to package lyophilized powder products
Solution Approach 1:
The bottle is divided into two separate compartments: an inner cavity for liquid storage and an outer cavity for powder storage. This segmentation allows each compartment to be optimized for its specific function, with the powder compartment featuring a sealed bottom that prevents moisture ingress while maintaining structural simplicity
Solution Approach 2:
A sealed bottom structure acts as an intermediary barrier between the powder compartment and the liquid compartment. This intermediary element prevents direct contact between powder and moisture while allowing controlled interaction when needed, solving the moisture susceptibility problem without requiring complex sealing mechanisms
2Ease of operation
If the inner cavity is opened by pressing the head cap to drive the valve stem, then the operation is simple, but it is difficult to introduce material without moisture exposure
Solution Approach 1:
The powder is pre-loaded into the outer cavity through a sealed bottom design before use. This preliminary action of sealed loading prevents moisture exposure during the material introduction phase, while the simple head cap pressing operation remains intact for activating the mixing function
3Device complexity
If the conventional single-compartment design is used, then the device complexity is low, but it lacks reuse and assembly capabilities for different functions
Solution Approach 1:
The dual-compartment design enables the bottle to perform multiple functions: separate storage of liquid and powder, controlled mixing through head cap pressing, and potential reconfiguration for different product types. This multi-functionality is achieved while maintaining relatively simple construction through the use of standard sealing and compartmentalization techniques
Data Source
AI summary
A fresh-keeping vacuum bottle with two compartments for preserving freshness, specifically designed to tackle the technical challenges faced by existing similar products in packaging powder products like freeze-dried powder, for example, prone to moisture, and challenged to reuse and assemble as replacement bottles. The bottle mouth of the vacuum bottle body and the large circle are connected through snap fitting to create a lower liquid storage compartment. The large circle includes a fixed large circle, a rotating large circle, and an inner sleeve large circle, with the fixed large circle being connected through snap fitting to the mouth fixed on the bottle body. The rotating large circle rotates the sealing plug until the upper thru-hole of the rotating large circle, the middle thru-hole of the sealing plug, and the lower thru-hole of the fixed large circle are aligned sequentially to achieve dual-compartment mixing.